Screening for low phosphorus-tolerant soybean cultivars from the Japanese core collection

• Published in: Euphytica Vol. 219; no. 1; p. 13
• Main Authors: Tantriani, Cheng, Weiguo, Tawaraya, Keitaro
• Format: Journal Article
• Language: English
• Published: Dordrecht Springer Netherlands 01.01.2023; Springer; Springer Nature B.V
• Subjects: Biomedical and Life Sciences; Biotechnology; Cultivars; Dry weight; Life Sciences; Multiple criterion; Phosphorus; Phosphorus pentoxide; Plant Genetics and Genomics; Plant growth; Plant Pathology; Plant Physiology; Plant Sciences; Soils; Soybean; Soybeans; Weight; Screening; Soil culture; Low phosphorus tolerance; Phosphorus deficiency; Soybean cultivars
• ISSN: 0014-2336; 1573-5060
• DOI: 10.1007/s10681-022-03145-2

Soybean growth is frequently hampered by a lack of phosphorus (P). This study aimed to screen soybean cultivars for low P tolerance using cultivars from the Japanese core collection. Eighty-one soybean cultivars were grown in soil cultures for 25 days after transplanting. The plants were subjected to P treatment (− P treatment: 0 g P 2 O 5 kg −1 soil; and + P treatment: 1 g P 2 O 5 kg −1 soil). Shoot dry weight, root length, P concentration, and P uptake were measured at 25 days after transplanting. Low P-tolerant and low P-sensitive cultivars were selected based on multiple criteria, including shoot dry weight, P utilization efficiency, and low P tolerance (LPT) value. The shoot dry weight of 30 soybean cultivars was lower in − P than in + P. The root length showed a significant and positive correlation with P uptake, P utilization efficiency, and dry weight in the − P and + P treatments. The LPT values of soybean cultivars ranged from 8 to 160%. The low P-tolerant and -sensitive soybean cultivars can be used as study materials in future studies to elucidate the mechanism of low P tolerance in soybeans.